Container



Sept. 19, 1933. E. E, FRANZ 1,927,065

CONTAINER Filed June 18, 1929 Patented Sept. 19, 1933 UNITED STATES PATENT OFFICE CONTAINER Application June 18, 19219. Serial No. 371,824

6 Claims.

This invention relates to containers, and more Y particularly to metal containers.

The object of this invention is to provide a container which is simple and rigid in construction, economical to manufacture and durable in service. In accordance with the general features of this invention ythere is provided in one embodiment thereof as applied to a container for encasing 'l0 electrical coils, a body portion with double walls or layers of sheet metal, wherein the inner wall is shorter than the outer wall, providing internal shoulders at each end for receiving` heads which are secured against the shoulders by forming the projecting portions of the outer wall over and onto the heads by a crimping or staking operation. A member is Xed to the inner surface of the lower headfor supporting -the coil, and the A opposite head is provided with a plurality of apertures for the projection of terminals which are connected to the windings of the coil.

According to another embodiment of this invention the body portion of the container is constructed by Vforming a metal cup in which there is inserted a split or solid metal sleeve tting closely within the wall of the cup and having its upper edge below the upper edge of the wall and providing an internal shoulder for securing a head oflike construction and in a similar manner to that of the first embodiment.

Otherl objects and advantages of thisinvention will more fully appear from the following detailed description taken in connection with the accompanying drawing, wherein Fig. l is a perspective View of one form of container embodying the features of this invention as applied to the encasing of an electricalcoil;

Fig. 2 is a central vertical sectional view through a container of the type shown in Fig. 1 with the coil left out;

Fig. 3 is a plan section on the line 3-3 of Fig. 2;

Fig. 4 is an enlarged fragmentary view of a portion of Fig. 2; l

Fig. 5 is an enlarged fragmentary View of a v portion of Fig. 3, and

Fig. 6 is a View similar to Fig. 2 showing other embodiment of this invention.

Referring now to the drawing wherein like reference numerals refer to similar parts throughout the several views, oneV form ofthe improved container as illustrated particularly in l Figs. 1, 2, and 3 comprises a body portion 10 formed from inner and outer sheets 11 and 12, respectively, preferably of [sheet steel of suitable size and shaped to form the body of an oblong container Ahaving opposite rounded ends for encasing an electrical coil (not shown), but celluloid, paper, etc., may also be used with good results. The details of the coil to which the container embodying the features of this invention have been applied for encasing the same are not essential to a full understanding of this invention, and consequently no disclosure thereof is included. The outer sheet 12 forming the outer wall is made of thinner metal than the inner sheet 11 65 which forms the inner wall and is of greater height, as clearly indicated in Fig. 2 by the broken outline of the upper and lower ends of the outer sheet before its complete assembly with the inner sheet. As shown in the drawing, the thick- 70 ness of the sheets l1 and 12 has been exaggerated for the sake of clearness, and it will be apparent that the` thickness thereof may be varied overa wide range, also that the sheets may each be of the same thickness or the outer sheet may be f 'thicker than the inner, depending on the particular application of the container, without departing from the spiritV and scope of 'the present invention.

In constructing the container the inner and S0 outer sheets ll and l2, respectively, are first shaped to fit snugly one within the other and parallelly disposed throughout when assembled. As clearly shown in Figs. 3 and 5 the inner sheet 11 is formed so that the adjacent edges thereof pro- S5 Vide a flush edge joint 13 at one end of the body 10, with the edges slightly spaced apart, while the outer sheet 12 is formed so that the adjacent edgesthereof are in abutting relation to form a joint 14. which is offset from the joint 13 at one 90 side of the body 10. yIt will be observed, referring to Figs. 3 and 5, that by providing the split inner wall or sheet 11 with the adjacent edges thereof slightly spaced apart the sheet will adjust itself inwardly lor outwardly to fit closely the inner contour of the'outer sheet or wall 12 upon slight variations.v in this contour occurring and thus insuring a snug fit between them.

In assembling the shaped sheets 1l and 12 forming the inner and outer walls, respectively, of the body 10, the inner sheet is positioned within the outer sheet with its top and bottom edges spaced back of the top and bottom edges of the outer sheets which, as hereinbefore described, is of greater height than the inner sheet, and thus providing internal shoulders 17 and 18 at the top and bottom l*of the body l0. The `opposed abutting edges ofthe sheet metal forming the joint 14 of the outer sheet'12 or wall of the body 10 are fused together, preferably by being `electrically seam 3,0? formed into the container body 10.

4QF tween the sheets during subsequent operations edges of the outer sheet 12 are brought into abutwelded or otherwise at the top and bottom for a suitable distance, as indicated at 19 and 20, respectively, to maintain the edges in abutting relation, and fused or spot welded, as indicated at 21, at an intermediate point to prevent buckling. The outer sheet is also fused or spot welded at a plurality of points 22-22 at each side of its joint 14 to the inner sheet l1 or wall to prevent displacement between the walls during the securing of heads or cover and bottom members in position to be presently described.

A preferred method of assembling and forming the inner and outer sheets 11 and l2, respectively, into the container body 1U previously described and illustrated in Figs. 1, 2 and 3, may comprise the following operations. Two plane sheets 11 and 12 of metal or other suitable material of the required dimensions to provide the particular container body 10 are first formed in any suitable manner, the inner sheet 11 being narrower than the outer sheet 12 to provide the internal shoulders 17 and 1S, the sheets each being substantially the same length. The sheets are then laid one on the other and centered laterally with one end of each sheet overlapping and extending from the corresponding end of the other sheet for substantially the same distance which provides the inner and outer displaced joints 13 and 14, re spectively, when the sheets are subsequently The outer sheet l2 is then fused or spot welded at a plurality of points adjacent its end to the inner sheet 11 to permit the forming of the sheets as a unit in subsequent operations into the container body 10 shown in the drawing. The fused points may be one of the series of spot welds 22-22, previously mentioned, shown at each side of the joint 14 of the outer sheet 12 in Fig. 1, which as described hereinbefore serve to prevent displacement beupon the outer sheet in the securing of the cover and bottom members in position. Thereafter the fused integral sheets 11 and 12 may be shaped by a series of forming operations until the narrow ting relation to form the joint 14, and subsequently fused together as previously described. Specifically, the fused sheets 11 and 12 as a unit may be rst formed into a U-shaped member having .parallel legs with the overlapping end portion of the outer sheet and a portion of the inner sheet adjacent thereto forming one leg and the opposite end portion of the inner sheet which overlaps the outer sheet forming the opposite leg, the two ends of the inner sheet being on a common plane. Thereafter the unformed portions of the sheets 11 and 12 interconnecting the legs may be shaped beginning at a point intermediate the ends of the inner sheet so as to bring the two ends of the inner sheet into justa-position and at the same time the inner end of the outer sheet will be in position at the point where the joint 14 is subsequently formed, as clearly shown in Fig. 5. Upon the completion of this forming operation the overlapping end portion of the outer sheet 12 which previously was a part of the first mentioned leg of the U-shaped formation will extend at right angles to the position of the opposite end of the sheet 12 and over the adjacent ends of the inner sheet 11. Thereafter the projecting end of the outer sheet 12 is shaped around the adjacent portion `of the inner sheet 11 `to bring its edge into abutting relation with the edge of the opposite end of the outer sheet to form the joint 14. When the edges of the outer sheet are brought together, the outer narrow edges of the inner sheet form the joint 13 wherein they will be slightly spaced apart for the purpose fully described hereinbefore and as shown in Fig. 5.

Heads or cover end bottom members 23 and 24, respectively, comprising plane plates of sheet steel or brass, a phenolic condensationproduct or other material formed to fit within the inner periphery of the outer sheet 12 or wall are inserted against the shoulders 17 and 18, respectively, when the projecting portions of the outer sheet or wall 12 at each end thereof extending completely around the body are formed over the cover and bottom members 23 and 24 by a suitable crimping or staking operation. The position of the projecting portion of the outer sheet or wall l2 after being staked or rolled over the bottom member 24 is clearly shown in Fig. 4, and it will be observed that the outer edge of the bottom member 24 is beveled or rounded to facilitate the forming of the outer sheet or wall 12 thereover in the closing in operation and to insure a tight joint. It is to be understood that the outer edges of both the cover member 23 and the bottom member 24 are similarly beveled completely around their outer edges.

Spot welded, as indicatedat 25 (Fig. 2), or otherwise secured to the bottom member 24 is a cupshaped sheet steel member 26 used to support the coil (not shown) within the container. It will be apparent that the member 26 may be welded to the bottom member 24 previous to its insertion in the body container 10, or it may be welded after being secured thereto. The cover member 23 is provided with a plurality of apertures 2'7 (Fig. 1) through which' extend terminals 28 connected at their inner ends to the windings of the coil, and coil mounting bolts 29 extend from the upper end of the coil through apertures (not shown) provided in the cover member 23.

In Fig. 6 is illustrated another embodiment of this invention to be used for a similar purpose as the previously described embodiment. The embodiment shown in Fig. 6 includes inner and outer walls 11 and 12, respectively, the outer wall 12 being provided by the continuous body wall of a cup-shaped member 32 formed from metal, Celluloid or other suitable material, with an integral bottom wall 33 thereof serving the purpose of the bottom member 24 of the other embodiment. The inner wall 11 is formed from metal sheet or other suitable material similar to the previously mentioned inner sheet or body wall and ts closely the inner periphery of the outer wall 12, the upper continuous edge of the wall 12 projecting above the upper edge of the inner wall 11, and thus providing an internal shoulder 17 at the upper end of the body 10 against which a cover member 23 is secured by forming the projecting portion of the outerY wall 12 over the cover member in a manner similar to that previously described. The only material difference in the two embodiments of this invention represented in Figs. 2 and 6 is that the continuous outer wall 12 of the body 10.

Cil

as to provide for maximum strength and minimum Weight, and are also fluid tight, particularly for the more viscous types of fluids. Furthermore, they are particularly adapted for simple methods of manufacture at a relatively low cost. While the features of this invention have been disclosed and described in connection with a container for a particular article, it will be understood that the invention is capable of other applications and is only limited by the scope of the appended claims.

What is claimed is:

l. In a container for an electrical coil immersed in a viscous substance, a body formed from a plurality of layers of material of different dimensions so assembled that the joints of each layer will be offset from each other, and cover and bottom members with edges having a bevel` extending from one plane surface to the other secured against the ends of the inner member by forming the projecting portions of the layer of greatest dimension over the members.

2. In a container, a body formed from inner and outer sheets of material fastened together before forming, adjacent edges of the inner sheet being in alignment and offset relative to adjacent edges of the outer sheet which are in abutting relation, the outer sheet projecting from opposite portions of the inner sheet to provide internal shoulders, and heads With edges having a bevel extending from one plane vsurface to the other secured against the shoulders by forming the projecting portions of the outer sheet over the beveled edges of the heads.

3. In a container, a body formed from a plurality of sheets of metal of different dimensions having adjacent edges of each sheet aligned and offset relative to the adjacent edges of the other sheet, the sheets assembled to provide opposite shoulders, the adjacent edges of the outer sheet being in abutting relation and a portion thereof fused together, the sheets also being suiciently fused together to prevent displacement therebetween, and heads with edges having a bevel extending from one plane surface to the other secured against the shoulders by forming the projecting portions of the layer of greatest dimension over the beveled edges of the heads.

4. In a container, a body formed from inner and outer layers of material, the outer layer having a head integral With and extending transversely to a continuous side Wall and projecting beyond a portion of the inner layer to provide a shoulder, and an end member fastened against the shoulder by forming the projecting portion of the outer layer thereover. f

5. In a container, a body formed from a plu rality of inner layers and an outer layer, each inner layer having adjacent edges aligned and offset relative to the corresponding edges of the other layers, the outer layer having a continuous side Wall integral With a transversely extending end portion and projecting beyond the inner layers to provide a shoulder, and an end member fastened against the shoulder by forming the projecting portion of the outer layer thereover.

6. In a container forl an electrical coil immersed in a viscous substance, a body formed from a plurality of layers of material of different dimensions so assembled that the joints of each layer will be offset from each other, and an end closure member With edges having a bevel extending from one plane surface secured against the end of an inner layer by forming the projecting portions of the layer of greatest dimensions over the member.

ERWIN EMIL FRANZ. 

